<?php

namespace App\Repositories\Admin\Log;

use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Facades\DB;

final class MemberJoinLogRepository
{
    private const TABLE = 'mem_join_log';

    public function paginate(array $filters, int $perPage = 30): LengthAwarePaginator
    {
        $q = DB::table(self::TABLE . ' as l')
            ->select([
                'l.seq',
                'l.gubun',
                'l.mem_no',
                'l.cell_corp',
                'l.cell_phone',
                'l.email',
                'l.ip4',
                'l.ip4_c',
                'l.error_code',
                'l.dt_reg',
            ]);

        // 기간(dt_reg)
        if (!empty($filters['date_from'])) {
            $q->where('l.dt_reg', '>=', $filters['date_from'] . ' 00:00:00');
        }
        if (!empty($filters['date_to'])) {
            $q->where('l.dt_reg', '<=', $filters['date_to'] . ' 23:59:59');
        }

        // gubun
        $gubun = trim((string)($filters['gubun'] ?? ''));
        if ($gubun !== '') $q->where('l.gubun', $gubun);

        // error_code (2자리)
        $err = trim((string)($filters['error_code'] ?? ''));
        if ($err !== '') $q->where('l.error_code', $err);

        // mem_no
        if (($filters['mem_no'] ?? null) !== null) {
            $q->where('l.mem_no', (int)$filters['mem_no']);
        }

        // phone exact (encrypt 결과)
        if (!empty($filters['phone_enc'])) {
            $q->where('l.cell_phone', (string)$filters['phone_enc']);
        }

        // email (부분검색)
        $email = trim((string)($filters['email'] ?? ''));
        if ($email !== '') {
            $like = '%' . $this->escapeLike($email) . '%';
            $q->where('l.email', 'like', $like);
        }

        // ip4 prefix
        $ip4 = trim((string)($filters['ip4'] ?? ''));
        if ($ip4 !== '') {
            $q->where('l.ip4', 'like', $this->escapeLike($ip4) . '%');
        }

        // ip4_c prefix
        $ip4c = trim((string)($filters['ip4_c'] ?? ''));
        if ($ip4c !== '') {
            $q->where('l.ip4_c', 'like', $this->escapeLike($ip4c) . '%');
        }

        // 최신순
        $q->orderByDesc('l.dt_reg')->orderByDesc('l.seq');

        return $q->paginate($perPage)->withQueryString();
    }

    private function escapeLike(string $s): string
    {
        return str_replace(['\\', '%', '_'], ['\\\\', '\%', '\_'], $s);
    }
}